Optical Sensors

Vibration insensitive optical fiber current sensor with a modified reciprocal reflection interferometer

[+] Author Affiliations
Hermann Lin

National Sun Yat-sen University, Institute of Electrical Engineering, Kaohsiung, Taiwan?804

Wuu-Wen Lin

Chung-Shan Institute of Science and Technology, Tso-Ying, Kaohsiung, Taiwan?813

Mao-Hsiung Chen

National Sun Yat-sen University, Institute of Electrical Engineering, Kaohsiung, Taiwan?804

Shih-Chu Huang

Chung-Shan Institute of Science and Technology, Tso-Ying, Kaohsiung, Taiwan?813

Opt. Eng. 38(10), 1722-1729 (Oct 01, 1999). doi:10.1117/1.602224
History: Received Apr. 17, 1998; Revised Dec. 14, 1998; Accepted Apr. 15, 1999
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Abstract

A modified reciprocal reflection interferometer (MRRI) is proposed for vibration insensitive optical fiber current sensors (OFCSs). The verifications of experiments are in good agreement with our theoretical analyses. A large vibrational perturbation applied to a segment of lead fiber to simulate the disturbance to the OFCS can be suppressed over 20 dB compared with a conventional reciprocal reflection interferometer (RRI). The noise floor of the OFCS with an MRRI under perturbations is about 1.36 Arms turns/Hz1/2 near the shot noise limit. A good linear demodulation result is obtained and the evaluation of the Verdet constant 1.1 μrad/Arms turns approximates the literatural data measured in static environment. © 1999 Society of Photo-Optical Instrumentation Engineers.

© 1999 Society of Photo-Optical Instrumentation Engineers

Citation

Hermann Lin ; Wuu-Wen Lin ; Mao-Hsiung Chen and Shih-Chu Huang
"Vibration insensitive optical fiber current sensor with a modified reciprocal reflection interferometer", Opt. Eng. 38(10), 1722-1729 (Oct 01, 1999). ; http://dx.doi.org/10.1117/1.602224


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